en perpetuidad
From LSJ
ἀσκέειν, περὶ τὰ νουσήματα, δύο, ὠφελέειν, ἢ μὴ βλάπτειν → strive, with regard to diseases, for two things — to do good, or to do no harm | as to diseases, make a habit of two things — to help, or at least, to do no harm
Spanish > Greek
εἰς τὸ διηνεκές, διηνεκέως, αἰωνίως, αἰανῶς, ἀτελευτήτως, εἰσαεί, ἐς τὸ πᾶν αἰεί, ἀενάως, ἀεί, εἰς πάντα χρόνον, εἰς ἀΐδιον, εἰσαεί, εἰς τὸ πᾶν χρόνου, αἰέν, ἐσαεί, δι' αἰῶνος, τὸν δι' αἰῶνος χρόνον, διὰ τέλους
